package com.yyysj.common.core.utils;

import com.yyysj.common.core.constants.JwtConstants;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import java.util.Map;

public class JwtUtils {
    /**
     * ⽣成令牌
     *
     * @param claims 数据
     * @param secret 密钥
     * @return 令牌
     */
    public static String createToken(Map<String, Object> claims, String secret)
    {
        String token =
                Jwts.builder()
                        .setClaims(claims)
                        .signWith(SignatureAlgorithm.HS512, secret)
                        .compact();
        return token;
    }

    /**
     * 从令牌中获取数据
     *
     * @param token 令牌
     * @param secret 密钥
     * @return 数据
     */
    public static Claims parseToken(String token, String secret) {
        return Jwts.parser()
                .setSigningKey(secret)
                .parseClaimsJws(token)
                .getBody();
    }

    public static String getUserKey(Claims claims) {
        return toStr(claims.get(JwtConstants.LOGIN_USER_KEY));
    }

    public static String getUserId(Claims claims) {
        return toStr(claims.get(JwtConstants.LOGIN_USER_ID));
    }

    private static String toStr(Object value) {
        if (value == null) {
            return "";
        }
        return value.toString();
    }

    public static void main(String[] args) {
//        Map<String,Object> claims = Map.of("userId",333);
//        String secret = "secresadsadasdsadasdsadt";
//        String token = createToken(claims, secret);
//
//        System.out.println(token); // eyJhbGciOiJIUzUxMiJ9.eyJ1c2VySWQiOjMzM30.0afBnPy7hcqkMB2iOYiR0GNUGVktgjaxZtvJX1q9wvXQ1nu1EBqYWepQFYJFR6qYA_8YlvWRHCy6EP9sDLI43A
        String token = "eyJhbGciOiJIUzUxMiJ9.eyJ1c2VySWQiOjMzM30.0afBnPy7hcqkMB2iOYiR0GNUGVktgjaxZtvJX1q9wvXQ1nu1EBqYWepQFYJFR6qYA_8YlvWRHCy6EP9sDLI43A";
        String secret = "secresadsadasdsadasdsadt";
        Claims claims = parseToken(token, secret);
        System.out.println(claims.get("userId"));
    }
}